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-rw-r--r--security/keys/gc.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/security/keys/gc.c b/security/keys/gc.c
index 4770be375ff..19902319d09 100644
--- a/security/keys/gc.c
+++ b/security/keys/gc.c
@@ -77,7 +77,8 @@ static bool key_gc_keyring(struct key *keyring, time_t limit)
goto dont_gc;
/* scan the keyring looking for dead keys */
- klist = rcu_dereference(keyring->payload.subscriptions);
+ klist = rcu_dereference_check(keyring->payload.subscriptions,
+ lockdep_is_held(&key_serial_lock));
if (!klist)
goto dont_gc;